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Accrued Expenses
12 Months Ended
Dec. 31, 2020
Accrued Expenses  
Accrued Expenses

6. Accrued Expenses

At December 31, 2020 and 2019, accrued expenses consist of the following (in thousands):

As of

December 31, 

    

December 31, 

    

2020

2019

Accrued payroll and related expenses

$

6,663

$

4,380

Accrued external research and development expense

5,387

4,088

Accrued payable for property and equipment

1,291

Accrued professional and consulting expense

1,141

929

Accrued other

 

476

 

213

$

14,958

$

9,610